Design of Templeton Overpass for the Canada Line
Bibliographic record
Abstract
The Canada Line is a 19 km rapid transit line connecting Downtown Vancouver with Richmond and the Vancouver International Airport (YVR). The airport section of the Canada Line includes a 1.8 km at-grade guideway. The at-grade guideway is designed to accommodate future airplane taxi way requirements in accordance with YVR's future plan. Templeton Street is a major road servicing YVR and connects the North Service Road with Grant McConachie Way. A grade separated structure is required to allow the train to travel at-grade and vehicular traffic to cross over the Canada Line uninterrupted. After comparing various design and construction options for the overpass, the decision was made to design a 60 m long cast-in-place concrete box structure with approach ramps. This paper presents various options considered for the overpass, the preliminary design and detailed design of the overpass structures. The soil condition surrounding the Templeton Overpass consists of highly compressible soft clayed silt. The large amounts of fill placed for the approach ramp and the off ramp to Grant McConachie Way causes short term and long term soil settlement. The effects of the long term settlement on the structural design, roadwork and Canada Line track, and strategy to accommodate the settlement in the structural and trackwork design are discussed in this paper. A brief discussion of the construction aspects will also be included.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.011 | 0.002 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".